It's been a lot of years, but I was looking for something green...
Shamrocks are nice, but they are so overused. Leprechauns would be okay, but nope...short little guys in pointy-toed shoes don't quite cut it for me.
So maybe a nice picture of Blarney Castle in Ireland?
That's nice and green. Or maybe a picture of Carrick Fergus Castle?
Hey...some of these castles are up for sale. Got a couple million pounds sterling? And you don't have to mow the lawns...they come complete with hungry sheep.
So enjoy wearin' the green...and have yerself a wonderful St. Paddy's Day.